> Once a South County draw, the stretch has become a major route for commuters heading to neighboring towns. As traffic has thickened, shoppers have deserted the area and businesses have gone elsewhere. "Twenty-five years ago, this was a booming area," said Michelle Selzer, who owns Hair Associates salon, one of the businesses still holding on in Saddleback Valley Plaza. "I grew up in Mission Viejo, and when I was a kid, this was the place to hang out. Now, people just try to avoid it."